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Vulnerability record · CVE-2026-39962 · published 9 April 2026

CVE-2026-39962: Misp-project misp ldap injection vulnerability

Misp Project · Misp

MISP is an open source threat intelligence and sharing platform. Prior to 2.5.36, improper neutralization of special elements in an LDAP query in ApacheAuthenticate.php allows LDAP injection via an unsanitized username value when ApacheAuthenticate.apacheEnv is configured to use a user-controlled server variable instead of REMOTE_USER (such as in certain proxy setups). An attacker able to control that value can manipulate the LDAP search filter and potentially bypass authentication constraints or cause unauthorized LDAP queries. This vulnerability is fixed in 2.5.36.

8.8 CVSS 4.0 High EPSS 0.66% · top 50.7% CWE-90 · LDAP injection
8.8CVSS 4.0 base score
0.66%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
22 Jun 2026Last modified by NVD

Description

MISP is an open source threat intelligence and sharing platform. Prior to 2.5.36, improper neutralization of special elements in an LDAP query in ApacheAuthenticate.php allows LDAP injection via an unsanitized username value when ApacheAuthenticate.apacheEnv is configured to use a user-controlled server variable instead of REMOTE_USER (such as in certain proxy setups). An attacker able to control that value can manipulate the LDAP search filter and potentially bypass authentication constraints or cause unauthorized LDAP queries. This vulnerability is fixed in 2.5.36.

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:L/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/MISP/MISP/commit/380ee4136a7d9ce2fe63fce06d517839f30aba10 Patch
https://github.com/MISP/MISP/commit/d7d671ea8f5822e91207dcad2003c35c30092a32 Patch
https://github.com/MISP/MISP/releases/tag/v2.5.36 ProductRelease Notes
https://github.com/MISP/MISP/security/advisories/GHSA-mc53-48w8-9g63 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2024-29858Misp-project misp vulnerabilityIn MISP before 2.4.187, __uploadLogo in app/Controller/OrganisationsController.php does not properly check for a valid logo upload.EPSS 0.38%9.8CVE-2024-29859Misp-project misp unrestricted file upload vulnerabilityIn MISP before 2.4.187, add_misp_export in app/Controller/EventsController.php does not properly check for a valid file upload.EPSS 0.82%9.8CVE-2024-25674Misp-project misp unrestricted file upload vulnerabilityAn issue was discovered in MISP before 2.4.184. Organisation logo upload is insecure because of a lack of checks for the file extension and MIME type.EPSS 0.78%9.8CVE-2024-25675Misp-project misp vulnerabilityAn issue was discovered in MISP before 2.4.184. A client does not need to use POST to start an export generation process. This is related to app/Cont…EPSS 0.82%9.8CVE-2023-50918Misp-project misp vulnerabilityapp/Controller/AuditLogsController.php in MISP before 2.4.182 mishandles ACLs for audit logs.EPSS 0.79%9.8CVE-2023-48655Misp-project misp vulnerabilityAn issue was discovered in MISP before 2.4.176. app/Controller/Component/IndexFilterComponent.php does not properly filter out query parameters.EPSS 0.92%9.8CVE-2023-48656Misp-project misp vulnerabilityAn issue was discovered in MISP before 2.4.176. app/Model/AppModel.php mishandles order clauses.EPSS 0.92%9.8CVE-2023-48657Misp-project misp vulnerabilityAn issue was discovered in MISP before 2.4.176. app/Model/AppModel.php mishandles filters.EPSS 0.92%

Source: NIST National Vulnerability Database (record CVE-2026-39962), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.